APOD: 2023 September 6 Б HESS Telescopes Explore the High Energy Sky
| << Yesterday | 6.09.2023 | Tomorrow >> |
Credit & Copyright: Jeff Dai
(TWAN),
H.E.S.S. Collaboration;
Music: Ibaotu catalog number 1044988 (Used with permission)
Explanation:
They may look like modern mechanical dinosaurs, but they are enormous swiveling eyes
that watch the sky.
The
High Energy Stereoscopic System (H.E.S.S.) Observatory
is composed of four 12-meter reflecting-mirror telescopes surrounding a
larger telescope housing a 28-meter mirror.
They are designed to detect strange flickers of blue light --
Cherenkov radiation
--emitted when
charged particles move
slightly faster than the
speed of light in air.
This light is emitted when a
gamma ray
from a distant source strikes a molecule in
Earth's atmosphere and starts a
charged-particle shower.
H.E.S.S. is sensitive to some of the highest energy photons
(TeV)
crossing the universe.
Operating since 2003 in
Namibia,
H.E.S.S. has searched for dark
matter and has
discovered over 50 sources emitting high energy radiation including
supernova remnants and the
centers of galaxies that contain supermassive
black holes.
Pictured in June,
H.E.S.S. telescopes swivel and stare in
time-lapse sequences shot in front of
our
Milky Way Galaxy and the
Magellanic Clouds --
as the occasional Earth-orbiting satellite zips by.
Music: Ibaotu catalog number 1044988 (Used with permission)
Surf the Universe:
Random APOD Generator
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
gamma ray - гамма-излучение - гамма-телескоп - Черенкова-Вавилова излучение
Публикации со словами: gamma ray - гамма-излучение - гамма-телескоп - Черенкова-Вавилова излучение | |
См. также:
Все публикации на ту же тему >> | |
